Invasive Species
An invasive species is an introduced organism that is not native to a particular area. These species have no natural competitors, thus can quickly overtake and destroy organisms that naturally occur in an area. Such changes in a bioregion can cause ecological, environmental, and/or economic damage.
The Warm Springs Run watershed contains a number of invasive plant species, including:
- Purple Loosestrife
- Tree of Heaven
- Japanese Stiltgrass
- Multiflora Rose
- Japanese Knotweed
- Garlic Mustard
Since 2008, WSWA members have targeted the control of purple loosestrife to prevent its spread to other watersheds. A proven option to control this invasive species is the use of black-margined loosestrife beetles, which consume only this plant. WSWA uses this technique in areas of dense coverage of purple loosestrife. However, no method is completely effective to eradicate this plant.
Join Our Community: Receive WSWA Updates
Stay informed about our efforts to protect and restore the Warm Springs Run watershed. Sign up for our newsletter to receive the latest news, events, and ways you can get involved.